CVE-2026-24858 — Actively Exploited: Multiple Products (Fortinet)
Fortinet FortiAnalyzer, FortiManager, FortiOS, and FortiProxy contain an authentication bypass using an alternate path or channel that could allow an attacker with a FortiCloud account and a registered device to log into other devices registered to other accounts, if FortiCloud SSO authentication is enabled on those de
| CVE ID | CVE-2026-24858 |
|---|---|
| Vendor | Fortinet |
| Product | Multiple Products |
| Vulnerability name | Fortinet Multiple Products Authentication Bypass Using an Alternate Path or Channel Vulnerability |
| Date added | 2026-01-27 |
| Remediation due | 2026-01-30 |
| Known ransomware use | Unknown |
| Required action | Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. |
| Description | Fortinet FortiAnalyzer, FortiManager, FortiOS, and FortiProxy contain an authentication bypass using an alternate path or channel that could allow an attacker with a FortiCloud account and a registered device to log into other devices registered to other accounts, if FortiCloud SSO authentication is enabled on those devices. |
| Source | CISA Known Exploited Vulnerabilities |
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